Miscellaneous topics that do not fit into specific categories.
Since sign-in succeeds but Outlook.com times out when opening the mailbox, use Outlook.com support from inside the signed-in experience if possible:
- Open Outlook.com.
- Select Help from the top menu.
- Enter the issue in the Search Help box and press Return.
- If the self-help results do not fix it, try another search.
- If No results found appears, scroll to the bottom of the Help pane and under Still need help?, select Yes.
If the mailbox still will not open, Microsoft’s guidance for sign-in and account-access issues is to use the Microsoft account sign-in helper. If more help is needed after that, use Contact Support and select Get Help, then Contact Support.
Also check whether mailbox or Microsoft cloud storage is full, because a full mailbox or storage can affect Outlook.com mail behavior.